2 layers61.3 × 35.8 mm P00B UPDI Programmer, the printed circuit board in 3D

P00B UPDI Programmer

A UPDI Programmer to use the Würth Redfit Skedd Connector and a switch for UPDI and TX of the MCU.

Size: 61.3 × 35.8 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 40
Nets: 43
Pads: 128
Tracks, vias: 278, 36
Pours: 1
Routed: Yes
KiCad: KiCad 6 (file 20211014)
Created: 18 Feb 2024
Updated: 5 Apr 2025

Overview

P00B UPDI Programmer is an open-source printed circuit board by 42CrMo4, from the 42CrMo4/P00B_UPDI_Programmer repository on GitHub. It is a 2-layer board of 61.3 × 35.8 mm with 40 parts on 43 nets, routed with 278 tracks and 36 vias.

It is built around the CH340C, AP2112K-3.3 and TCK107AF,LF, with the JS202011JCQN and TYPE-C-31-M-12 among its other parts. Its parts include 8 resistors, 4 capacitors, 4 ICs, 4 diodes and 3 connectors. It belongs with the interfaces and adapters boards of this library.

Main components

README

README.md

UPDI Programmer

A UPDI Programmer to use the Würth Redfit Skedd Connector and a switch for UPDI and TX of the MCU.

Goal & Status

Goal: Prototype Status: implementation

Definitions

undefined	learn	prototype	80-20-rule	polished Product
not known what the project will bring	personally learn something new (function, design, process) otherwise no usefull outcome expected	a working prototype or mvp	80% outcome with 20% effort. Dont expect a finished product.	-

idea	design	implementation	testing	finished
brainstorming workflow	putting together a goal list, architecture, hig level	schematic, pcb

Todo

Description.

Font	Back

Link to the current BOM

Category and platform

Interfaces and adapters

Project files

Show this board on your page

https://pcbkit.io/boards/42CrMo4/P00B_UPDI_Programmer

The board's own page, for a message or a post.

Source

Repository: 42CrMo4/P00B_UPDI_Programmer
Board file: design.kicad_pcb
Commit: 6243937
Licence: Not stated

Parts

Qty	Value	Footprint	References
4	330	Resistor_SMD:R_0805_2012Metric	R3, R4, R5, R7
3	5.1k	Resistor_SMD:R_0805_2012Metric	R1, R2, R9
2	0.1uF	Capacitor_SMD:C_0805_2012Metric	C3, C4
2	1uF	Capacitor_SMD:C_0805_2012Metric	C1, C2
2	3.3V	LED_SMD:LED_0805_2012Metric	D3, D4
2	5V	LED_SMD:LED_0805_2012Metric	D1, D2
2	GND	TestPoint:TestPoint_Pad_D1.0mm	TP6, TP7
2	JS202011JCQN	Snapeda:SW_JS202011JCQN	S1, S2
1	1k	Resistor_SMD:R_0805_2012Metric	R6
1	3.3V	TestPoint:TestPoint_Pad_D2.0mm	TP3
1	5V	TestPoint:TestPoint_Pad_D2.0mm	TP4
1	AP2112K-3.3	Package_TO_SOT_SMD:SOT-23-5	U1
1	CDC	TestPoint:TestPoint_Pad_D1.0mm	TP10
1	CDR	TestPoint:TestPoint_Pad_D1.0mm	TP12
1	CH340C	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U3
1	CTS	TestPoint:TestPoint_Pad_D1.0mm	TP13
1	Conn_02x02_Counter_Clockwise	Connector_PinHeader_2.54mm:PinHeader_2x02_P2.54mm_Vertical	J4
1	DTR	TestPoint:TestPoint_Pad_D1.0mm	TP9
1	GLL1	Connector_custom:GLL1	J1
1	Jumper_3_Bridged12	Jumper:SolderJumper-3_P1.3mm_Bridged12_Pad1.0x1.5mm_NumberLabels	JP1
1	Power Cycle	Snapeda:EVP-BFAC1A000_EVPBFAC1A000	S3
1	RI	TestPoint:TestPoint_Pad_D1.0mm	TP11
1	RTS	TestPoint:TestPoint_Pad_D1.0mm	TP8
1	RX2	TestPoint:TestPoint_Pad_D2.0mm	TP1
1	TCK107AF,LF	Package_TO_SOT_SMD:SOT-23-5	U2
1	TS3USB30RSWR	Snapeda:TS3USB30RSWR_QFN40P140X180X55-10N	U4
1	TX2	TestPoint:TestPoint_Pad_D2.0mm	TP2
1	TYPE-C-31-M-12	Snapeda:TYPE-C-31-M-12_HRO_TYPE-C-31-M-12	J2
1	VCC	TestPoint:TestPoint_Pad_D2.0mm	TP5

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Questions

How big is the P00B UPDI Programmer PCB?

It measures 61.3 × 35.8 mm and has 2 copper layers, 1.6 mm thick.

What parts does the P00B UPDI Programmer use?

40 parts, built around the CH340C, AP2112K-3.3, TCK107AF,LF and JS202011JCQN. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the P00B UPDI Programmer KiCad files?

From the 42CrMo4/P00B_UPDI_Programmer repository on GitHub, at the commit this page was made from: the board is design.kicad_pcb and its schematic design.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the P00B UPDI Programmer design in my own project?

Its repository states no licence, so its author keeps all rights: ask 42CrMo4 before reusing the design.